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Cubikook CS-T01 Manual Knife Sharpener In-depth Review

Anh Ngo
Lap Vo
Test Lead
Nguyen Ntk
Visual Specialist
Tested Using Methodology v1.1
The Cubikook Chef Sharpener 3-stage knife sharpener on a cutting board with a knife and slices of tomatoes

Cubikook CS-T01 Specifications

Price at publication $17.50
Type Manual
Abrasives diamond, tungsten carbide, ceramic
Grit size Coarse, Medium, Fine
Dimensions L8.4 x W1.9 x H2.3 inches
Suitable for Quick, casual sharpening on a low budget

Overall Verdict

The Cubikook Chef Sharpener is a much better device than its price suggests. It’s quick, effortless to use, dependable, and offers a sharpness level that, while not exceptional, is sufficient for most kitchen tasks.

It’s also among the safest pull-through sharpeners to use, thanks to its wide flat base and a low center of gravity.

Things We Like

  • Excellent stability 
  • Affordable price
  • Consistent sharpness
  • Solid and sturdy construction

Things We Don’t Like

  • Small ceramic rods
  • Flaky brand label
  • Updated May 18, 2022:

    Review published.

Last year, we bought a Cubikook Chef Sharpener CS-T01 to test out. Now that it’s undergone over a year’s worth of use, we picked up a new one to compare it to and see how ours held up.

This model works smoothly and has never caused a problem, but at the same time, there was never anything exceptional about it. So imagine our surprise when we put a bunch of other sharpeners to the test, and then immediately realized how much we’ve been taking this one for granted.

Cubikook 3-stage Knife Sharpener’s Performance

The Cubikook performed consistently well in all four categories: speed, sharpness, material retention, and edge smoothness. As pull-through sharpeners go, this one is one of the most well-rounded options.

7.6Sharpening Time to Cut a Lemon

Sharpening Time
1 minutes 30 seconds
Cutting Feel
Swift and smooth

The Cubikook does a quick job of bringing life to a dull blade. After only 90 seconds on the device, our sandpaper-destroyed test knife could cut through a lemon with one swift draw. This placed the Cubikook in the top tier of pull-through sharpeners in terms of speed.

Most kitchen knives should see improvements after about 30 seconds on the second slot.

8.0Maximum Sharpness Achieved

Sharpening Time
6 minutes
Sharpness Level
8 (Chicken breast with skin, 1 swipe)

After 6 minutes of sharpening, the test knife could cut through a fresh piece of chicken breast with the skin still on. The gristly fat under the skin kept running, but we managed to sever it with a little effort. 

We tried the knife on a piece of raw beef tendon (Level 9) and it took two forced swipes, so we decided it hadn’t progressed beyond a sharpness level of 8.

8.0Material Retention

Medal residue on the three abrasive slots on the Cubikook knife sharpener
Medal residue on the three abrasive slots on the Cubikook knife sharpener
A bowl containing metal sharpening residue next to the Cubikook sharpener
Sharpening Time
1 minute

While effective, the Cubikook doesn’t remove a lot of material. This is one of the advantages multi-stage devices have over single-stage ones such as the Sunrise Pro. The first stage (diamond-impregnated rods) helps straighten the edge before you put it through the tungsten ‘peeler’ stage. Finally, the third, ceramic stage acts as a final honing step to leave your blade as smooth as possible. 

The benefit of single-stage devices is that they sharpen your knife quicker. That’s possible because they simply pull off more metal at a time. That means your knife will get eaten up faster, so you have the choice between quick sharpening or long overall blade life.

8.7Edge Smoothness

Close up view in vignette of the knife blade and edge after sharpening with the Cubikook Chef' Sharpener

The Cubikook creates a smooth edge. It came out looking much better than many single-stage and even multi-stage versions like Smith’s 50264 or Chef’s Choice ProntoPro. In fact, we scored this device better on the edge smoothness test than any other we’ve tested to date. It creates the straightest line with barely any visible chips, while the grooves on the primary edge were also even and narrow.

This fine edge is the result of good design choices. The device’s working section is placed low and fastened tightly to the base, which helps distribute pressure evenly against the delicate edge regardless of how much force is applied. The ceramic rods in the final stage help remove any remaining burrs or metal particles, thus minimizing edge deformities.

Cubikook 3-stage Knife Sharpener’s Design

The Cubikook is heavily function-oriented — it skips the bells and whistles and focuses on keeping the device sturdy, stable, and effective to use.

What’s in the Box With the Cubikook Kitchen Knife Sharpener

The Cubikook 3-stage knife sharpener next to its package box
  • The Cubikook sharpener
  • Thank you card 

The Cubikook comes in a nice box. Instead of an instruction booklet, the user guide is printed right on the box. We thought that was done to save paper, but then we also found a greeting card that doesn’t really say anything.


8.4" (21.3 cm)
1.9" (4.8 cm)
2.3" (5.8 cm)
7.9 oz (225 g)

8.8Build Quality

The Cubikook is easily the sturdiest handheld sharpener that we’ve tested. Its working section is secured to the base using metal screws. The device is solid, and because its parts fit together tightly, it feels like it’s one piece throughout. 

The only issue is with the label. It is a strip of silicone that’s attached to the grip with glue and is starting to fall off our one-year-old device. This, however, doesn’t affect the sharpener’s functionality.

The finish is nothing to write home about, but it does ensure easy cleanup.



This Cubikook’s grip is very simple. It’s a thin, flat handle with the brand label on top. 

It doesn’t have an ergonomic design or a velvety cover, but we’ve never had a problem maintaining a firm grip. However, we do think it could be even better if it were bulkier. 

The grip is connected to the base, forming a closed loop, which further improves the device’s stability. As a small plus, you can hang it on a rack or hook for quick access.

Working Section

Levels of Sharpening
Coarse, Medium, Fine
Diamond rods, tungsten carbide blades, ceramic rods
Pull through
Sharpening Angle
20 degrees

The device has one slot with diamond rods that shape and straighten the edge, one with tungsten bars that remove burrs and small amounts of metal, and one with ceramic rods for honing. 

The working section is secured to the base with screws and is technically detachable. However, you’d have to remove the silicone feet before you can take it apart. Also, the manufacturer doesn’t seem to sell spare parts online. We find it a pity that the whole device has to be discarded once the abrasives wear down, even though the other parts are still in perfect condition.

Cubikook Manual Knife Sharpener: the Base

ABS plastic
Feet Type
silicone base

The Cubikook has a flat base with two silicone pads underneath to keep it in place. It isn’t particularly large, but because the device is modest in height and tapers at the top, the base area is more than enough to keep it from wobbling. We love that the design is simple but still very effective in ensuring stability.

Cubikook CS-T01 Knife Sharpener Review: Ease of Use

The Cubikook has a straightforward design with a flat base, a sturdy working section, and an intuitive slot arrangement. Everything supports a safe and easy sharpening experience. It’s the best handheld sharpener for those with weak or shaky hands.

10Slot Arrangement

With one single working angle and the coarseness printed at each slot, the Cubikook Chef’ Sharpener is intuitive. Swipe through the slots until the knife is sharp — you really can’t go wrong with it. The slot labels are only embossed on one side, suggesting a right-handed orientation, but it functions just as well for southpaws. You just need to remember which slot is which.


The Cubikook has some of the widest slot openings out of all the devices we tested. Granted, you can still cut into the walls if you have trembling hands or try to insert the blade too fast, but overall, insertion is pretty effortless and doesn’t require much concentration.

9.0Pulling Through

The Cubikook’s stability and sturdiness make pulling a blade through its slots a breeze. The smaller sharpening rods mean their cradle is rather light, but not loose — at least not when the device is still new.

Within a few months of heavy use, one of the two ceramic rods unfastened itself and started spinning whenever we pulled a blade through. This happens on both of the devices we have, so we’re not quite sure if it’s a feature or a fault in design.

We like that the sharpening slots are thin and the U-shape cutouts that frame them sit far below where the rods meet, thus staying out of the blade’s path. We can pull a whole knife through quickly, place reasonable pressure on it, even with the tip downward, and still never cut into the plastic.

9.5Stability on a Clean Surface

The Cubikook has a low center of gravity, with its working section connected directly to its flat base. The two silicone pads underneath further aid in keeping it in place. It didn’t wobble or slip even when we deliberately applied more pressure than necessary.

8.0Stability on a Wet and Dirty Surface

The Cubikook stands shoulder to shoulder with the Chef’s Choice ProntoPro in this test and beats the others by leaps and bounds. It slipped but never came close to rolling or flipping. Again, a wide base and a working section placed low to its center of gravity are the recipe for success.

The Cubikook Sharpener Compared to Other Products

The Cubikook garnered the best overall rating among all manual knife sharpeners and is also our pick for the best knife sharpener to buy. It’s sturdy, well-designed, easy to use, and performed better than most. 

It’s not the top-rated sharpener in every parameter, but it’s the most well-rounded.

The PriorityChef 2-stage sharpener garnered a higher performance rating for its fast speed and excellent material retention, though its basic design sets it back by a few points. Similarly, the Wamery 4-stage sharpener was faster and saved more knife material; unfortunately, its performance wasn’t consistent and it couldn’t bring the knife to the same level of sharpness. The Chef’s Choice 4643’s design offers better stability and comfort but failed in actually restoring the knife sharpness.

About your guide

Headshot of Anh Ngo
Anh NgoReviewer

Anh Ngo is a writer with 9 years experience at different media outlets, covering from public news and events to product testing and analysis. At Healthy Kitchen 101, she works across different departments, communicating closely with its network of writers, editors, and health, tech, and search engine experts to provide a meaningful and pleasant reading experience for visitors.

Headshot of Lap Vo
Lap VoTest Lead

Lap Vo is head of the Research, Testing, and Review Team (the RTR) at Healthy Kitchen 101. He is responsible for designing and overseeing the testing of kitchen tools and appliances.